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<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2012 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.util;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.logging.InternalLogger;
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.logging.InternalLoggerFactory;
<a class="jxr_linenumber" name="20" href="#20">20</a>  
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.net.Inet4Address;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.net.Inet6Address;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.net.InetAddress;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.net.UnknownHostException;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.util.StringTokenizer;
<a class="jxr_linenumber" name="27" href="#27">27</a>  
<a class="jxr_linenumber" name="28" href="#28">28</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="29" href="#29">29</a>  <em class="jxr_javadoccomment"> * A class that holds a number of network-related constants.</em>
<a class="jxr_linenumber" name="30" href="#30">30</a>  <em class="jxr_javadoccomment"> * &lt;p/&gt;</em>
<a class="jxr_linenumber" name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> * This class borrowed some of its methods from a  modified fork of the</em>
<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * &lt;a href="<a href="http://svn.apache.org/repos/asf/harmony/enhanced/java/branches/java6/classlib/modules/luni/" target="alexandria_uri">http://svn.apache.org/repos/asf/harmony/enhanced/java/branches/java6/classlib/modules/luni/</a></em>
<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * src/main/java/org/apache/harmony/luni/util/Inet6Util.java"&gt;Inet6Util class&lt;/a&gt; which was part of Apache Harmony.</em>
<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/jboss/netty/util/NetUtil.html">NetUtil</a> {
<a class="jxr_linenumber" name="36" href="#36">36</a>  
<a class="jxr_linenumber" name="37" href="#37">37</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment">     * This defines how many words (represented as ints) are needed to represent an IPv6 address</em>
<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> IPV6_WORD_COUNT = 8;
<a class="jxr_linenumber" name="41" href="#41">41</a>  
<a class="jxr_linenumber" name="42" href="#42">42</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment">     * The maximum number of characters for an IPV6 string with no scope</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> IPV6_MAX_CHAR_COUNT = 39;
<a class="jxr_linenumber" name="46" href="#46">46</a>  
<a class="jxr_linenumber" name="47" href="#47">47</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment">     * Number of bytes needed to represent and IPV6 value</em>
<a class="jxr_linenumber" name="49" href="#49">49</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="50" href="#50">50</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> IPV6_BYTE_COUNT = 16;
<a class="jxr_linenumber" name="51" href="#51">51</a>  
<a class="jxr_linenumber" name="52" href="#52">52</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment">     * Maximum amount of value adding characters in between IPV6 separators</em>
<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="55" href="#55">55</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> IPV6_MAX_CHAR_BETWEEN_SEPARATOR = 4;
<a class="jxr_linenumber" name="56" href="#56">56</a>  
<a class="jxr_linenumber" name="57" href="#57">57</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="58" href="#58">58</a>  <em class="jxr_javadoccomment">     * Minimum number of separators that must be present in an IPv6 string</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="60" href="#60">60</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> IPV6_MIN_SEPARATORS = 2;
<a class="jxr_linenumber" name="61" href="#61">61</a>  
<a class="jxr_linenumber" name="62" href="#62">62</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment">     * Maximum number of separators that must be present in an IPv6 string</em>
<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> IPV6_MAX_SEPARATORS = 8;
<a class="jxr_linenumber" name="66" href="#66">66</a>  
<a class="jxr_linenumber" name="67" href="#67">67</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">     * Number of bytes needed to represent and IPV4 value</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="70" href="#70">70</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> IPV4_BYTE_COUNT = 4;
<a class="jxr_linenumber" name="71" href="#71">71</a>  
<a class="jxr_linenumber" name="72" href="#72">72</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment">     * Maximum amount of value adding characters in between IPV4 separators</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="75" href="#75">75</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> IPV4_MAX_CHAR_BETWEEN_SEPARATOR = 3;
<a class="jxr_linenumber" name="76" href="#76">76</a>  
<a class="jxr_linenumber" name="77" href="#77">77</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="78" href="#78">78</a>  <em class="jxr_javadoccomment">     * Number of separators that must be present in an IPv4 string</em>
<a class="jxr_linenumber" name="79" href="#79">79</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="80" href="#80">80</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> IPV4_SEPARATORS = 3;
<a class="jxr_linenumber" name="81" href="#81">81</a>  
<a class="jxr_linenumber" name="82" href="#82">82</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment">     * The logger being used by this class</em>
<a class="jxr_linenumber" name="84" href="#84">84</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="85" href="#85">85</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../org/jboss/netty/logging/InternalLogger.html">InternalLogger</a> logger = InternalLoggerFactory.getInstance(NetUtil.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="86" href="#86">86</a>  
<a class="jxr_linenumber" name="87" href="#87">87</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     * Creates an byte[] based on an ipAddressString. No error handling is</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * performed here.</em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> byte[] createByteArrayFromIpAddressString(String ipAddressString) {
<a class="jxr_linenumber" name="92" href="#92">92</a>  
<a class="jxr_linenumber" name="93" href="#93">93</a>          <strong class="jxr_keyword">if</strong> (isValidIpV4Address(ipAddressString)) {
<a class="jxr_linenumber" name="94" href="#94">94</a>              StringTokenizer tokenizer = <strong class="jxr_keyword">new</strong> StringTokenizer(ipAddressString, <span class="jxr_string">"."</span>);
<a class="jxr_linenumber" name="95" href="#95">95</a>              String token;
<a class="jxr_linenumber" name="96" href="#96">96</a>              <strong class="jxr_keyword">int</strong> tempInt;
<a class="jxr_linenumber" name="97" href="#97">97</a>              byte[] byteAddress = <strong class="jxr_keyword">new</strong> byte[IPV4_BYTE_COUNT];
<a class="jxr_linenumber" name="98" href="#98">98</a>              <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; IPV4_BYTE_COUNT; i ++) {
<a class="jxr_linenumber" name="99" href="#99">99</a>                  token = tokenizer.nextToken();
<a class="jxr_linenumber" name="100" href="#100">100</a>                 tempInt = Integer.parseInt(token);
<a class="jxr_linenumber" name="101" href="#101">101</a>                 byteAddress[i] = (byte) tempInt;
<a class="jxr_linenumber" name="102" href="#102">102</a>             }
<a class="jxr_linenumber" name="103" href="#103">103</a> 
<a class="jxr_linenumber" name="104" href="#104">104</a>             <strong class="jxr_keyword">return</strong> byteAddress;
<a class="jxr_linenumber" name="105" href="#105">105</a>         }
<a class="jxr_linenumber" name="106" href="#106">106</a> 
<a class="jxr_linenumber" name="107" href="#107">107</a>         <strong class="jxr_keyword">if</strong> (isValidIpV6Address(ipAddressString)) {
<a class="jxr_linenumber" name="108" href="#108">108</a>             <strong class="jxr_keyword">if</strong> (ipAddressString.charAt(0) == '[') {
<a class="jxr_linenumber" name="109" href="#109">109</a>                 ipAddressString = ipAddressString.substring(1, ipAddressString.length() - 1);
<a class="jxr_linenumber" name="110" href="#110">110</a>             }
<a class="jxr_linenumber" name="111" href="#111">111</a> 
<a class="jxr_linenumber" name="112" href="#112">112</a>             <strong class="jxr_keyword">int</strong> percentPos = ipAddressString.indexOf('%');
<a class="jxr_linenumber" name="113" href="#113">113</a>             <strong class="jxr_keyword">if</strong> (percentPos &gt;= 0) {
<a class="jxr_linenumber" name="114" href="#114">114</a>                 ipAddressString = ipAddressString.substring(0, percentPos);
<a class="jxr_linenumber" name="115" href="#115">115</a>             }
<a class="jxr_linenumber" name="116" href="#116">116</a> 
<a class="jxr_linenumber" name="117" href="#117">117</a>             StringTokenizer tokenizer = <strong class="jxr_keyword">new</strong> StringTokenizer(ipAddressString, <span class="jxr_string">":."</span>, <strong class="jxr_keyword">true</strong>);
<a class="jxr_linenumber" name="118" href="#118">118</a>             ArrayList&lt;String&gt; hexStrings = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;();
<a class="jxr_linenumber" name="119" href="#119">119</a>             ArrayList&lt;String&gt; decStrings = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;();
<a class="jxr_linenumber" name="120" href="#120">120</a>             String token = <span class="jxr_string">""</span>;
<a class="jxr_linenumber" name="121" href="#121">121</a>             String prevToken = <span class="jxr_string">""</span>;
<a class="jxr_linenumber" name="122" href="#122">122</a>             <strong class="jxr_keyword">int</strong> doubleColonIndex = -1; <em class="jxr_comment">// If a double colon exists, we need to</em>
<a class="jxr_linenumber" name="123" href="#123">123</a>             <em class="jxr_comment">// insert 0s.</em>
<a class="jxr_linenumber" name="124" href="#124">124</a> 
<a class="jxr_linenumber" name="125" href="#125">125</a>             <em class="jxr_comment">// Go through the tokens, including the seperators ':' and '.'</em>
<a class="jxr_linenumber" name="126" href="#126">126</a>             <em class="jxr_comment">// When we hit a : or . the previous token will be added to either</em>
<a class="jxr_linenumber" name="127" href="#127">127</a>             <em class="jxr_comment">// the hex list or decimal list. In the case where we hit a ::</em>
<a class="jxr_linenumber" name="128" href="#128">128</a>             <em class="jxr_comment">// we will save the index of the hexStrings so we can add zeros</em>
<a class="jxr_linenumber" name="129" href="#129">129</a>             <em class="jxr_comment">// in to fill out the string</em>
<a class="jxr_linenumber" name="130" href="#130">130</a>             <strong class="jxr_keyword">while</strong> (tokenizer.hasMoreTokens()) {
<a class="jxr_linenumber" name="131" href="#131">131</a>                 prevToken = token;
<a class="jxr_linenumber" name="132" href="#132">132</a>                 token = tokenizer.nextToken();
<a class="jxr_linenumber" name="133" href="#133">133</a> 
<a class="jxr_linenumber" name="134" href="#134">134</a>                 <strong class="jxr_keyword">if</strong> (<span class="jxr_string">":"</span>.equals(token)) {
<a class="jxr_linenumber" name="135" href="#135">135</a>                     <strong class="jxr_keyword">if</strong> (<span class="jxr_string">":"</span>.equals(prevToken)) {
<a class="jxr_linenumber" name="136" href="#136">136</a>                         doubleColonIndex = hexStrings.size();
<a class="jxr_linenumber" name="137" href="#137">137</a>                     } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (prevToken.length() != 0) {
<a class="jxr_linenumber" name="138" href="#138">138</a>                         hexStrings.add(prevToken);
<a class="jxr_linenumber" name="139" href="#139">139</a>                     }
<a class="jxr_linenumber" name="140" href="#140">140</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (<span class="jxr_string">"."</span>.equals(token)) {
<a class="jxr_linenumber" name="141" href="#141">141</a>                     decStrings.add(prevToken);
<a class="jxr_linenumber" name="142" href="#142">142</a>                 }
<a class="jxr_linenumber" name="143" href="#143">143</a>             }
<a class="jxr_linenumber" name="144" href="#144">144</a> 
<a class="jxr_linenumber" name="145" href="#145">145</a>             <strong class="jxr_keyword">if</strong> (<span class="jxr_string">":"</span>.equals(prevToken)) {
<a class="jxr_linenumber" name="146" href="#146">146</a>                 <strong class="jxr_keyword">if</strong> (<span class="jxr_string">":"</span>.equals(token)) {
<a class="jxr_linenumber" name="147" href="#147">147</a>                     doubleColonIndex = hexStrings.size();
<a class="jxr_linenumber" name="148" href="#148">148</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="149" href="#149">149</a>                     hexStrings.add(token);
<a class="jxr_linenumber" name="150" href="#150">150</a>                 }
<a class="jxr_linenumber" name="151" href="#151">151</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (<span class="jxr_string">"."</span>.equals(prevToken)) {
<a class="jxr_linenumber" name="152" href="#152">152</a>                 decStrings.add(token);
<a class="jxr_linenumber" name="153" href="#153">153</a>             }
<a class="jxr_linenumber" name="154" href="#154">154</a> 
<a class="jxr_linenumber" name="155" href="#155">155</a>             <em class="jxr_comment">// figure out how many hexStrings we should have</em>
<a class="jxr_linenumber" name="156" href="#156">156</a>             <em class="jxr_comment">// also check if it is a IPv4 address</em>
<a class="jxr_linenumber" name="157" href="#157">157</a>             <strong class="jxr_keyword">int</strong> hexStringsLength = 8;
<a class="jxr_linenumber" name="158" href="#158">158</a> 
<a class="jxr_linenumber" name="159" href="#159">159</a>             <em class="jxr_comment">// If we have an IPv4 address tagged on at the end, subtract</em>
<a class="jxr_linenumber" name="160" href="#160">160</a>             <em class="jxr_comment">// 4 bytes, or 2 hex words from the total</em>
<a class="jxr_linenumber" name="161" href="#161">161</a>             <strong class="jxr_keyword">if</strong> (!decStrings.isEmpty()) {
<a class="jxr_linenumber" name="162" href="#162">162</a>                 hexStringsLength -= 2;
<a class="jxr_linenumber" name="163" href="#163">163</a>             }
<a class="jxr_linenumber" name="164" href="#164">164</a> 
<a class="jxr_linenumber" name="165" href="#165">165</a>             <em class="jxr_comment">// if we hit a double Colon add the appropriate hex strings</em>
<a class="jxr_linenumber" name="166" href="#166">166</a>             <strong class="jxr_keyword">if</strong> (doubleColonIndex != -1) {
<a class="jxr_linenumber" name="167" href="#167">167</a>                 <strong class="jxr_keyword">int</strong> numberToInsert = hexStringsLength - hexStrings.size();
<a class="jxr_linenumber" name="168" href="#168">168</a>                 <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; numberToInsert; i ++) {
<a class="jxr_linenumber" name="169" href="#169">169</a>                     hexStrings.add(doubleColonIndex, <span class="jxr_string">"0"</span>);
<a class="jxr_linenumber" name="170" href="#170">170</a>                 }
<a class="jxr_linenumber" name="171" href="#171">171</a>             }
<a class="jxr_linenumber" name="172" href="#172">172</a> 
<a class="jxr_linenumber" name="173" href="#173">173</a>             byte[] ipByteArray = <strong class="jxr_keyword">new</strong> byte[IPV6_BYTE_COUNT];
<a class="jxr_linenumber" name="174" href="#174">174</a> 
<a class="jxr_linenumber" name="175" href="#175">175</a>             <em class="jxr_comment">// Finally convert these strings to bytes...</em>
<a class="jxr_linenumber" name="176" href="#176">176</a>             <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; hexStrings.size(); i ++) {
<a class="jxr_linenumber" name="177" href="#177">177</a>                 convertToBytes(hexStrings.get(i), ipByteArray, i &lt;&lt; 1);
<a class="jxr_linenumber" name="178" href="#178">178</a>             }
<a class="jxr_linenumber" name="179" href="#179">179</a> 
<a class="jxr_linenumber" name="180" href="#180">180</a>             <em class="jxr_comment">// Now if there are any decimal values, we know where they go...</em>
<a class="jxr_linenumber" name="181" href="#181">181</a>             <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; decStrings.size(); i ++) {
<a class="jxr_linenumber" name="182" href="#182">182</a>                 ipByteArray[i + 12] = (byte) (Integer.parseInt(decStrings.get(i)) &amp; 255);
<a class="jxr_linenumber" name="183" href="#183">183</a>             }
<a class="jxr_linenumber" name="184" href="#184">184</a>             <strong class="jxr_keyword">return</strong> ipByteArray;
<a class="jxr_linenumber" name="185" href="#185">185</a>         }
<a class="jxr_linenumber" name="186" href="#186">186</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="187" href="#187">187</a>     }
<a class="jxr_linenumber" name="188" href="#188">188</a> 
<a class="jxr_linenumber" name="189" href="#189">189</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="190" href="#190">190</a> <em class="jxr_javadoccomment">     * Converts a 4 character hex word into a 2 byte word equivalent</em>
<a class="jxr_linenumber" name="191" href="#191">191</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="192" href="#192">192</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> convertToBytes(String hexWord, byte[] ipByteArray, <strong class="jxr_keyword">int</strong> byteIndex) {
<a class="jxr_linenumber" name="193" href="#193">193</a> 
<a class="jxr_linenumber" name="194" href="#194">194</a>         <strong class="jxr_keyword">int</strong> hexWordLength = hexWord.length();
<a class="jxr_linenumber" name="195" href="#195">195</a>         <strong class="jxr_keyword">int</strong> hexWordIndex = 0;
<a class="jxr_linenumber" name="196" href="#196">196</a>         ipByteArray[byteIndex] = 0;
<a class="jxr_linenumber" name="197" href="#197">197</a>         ipByteArray[byteIndex + 1] = 0;
<a class="jxr_linenumber" name="198" href="#198">198</a>         <strong class="jxr_keyword">int</strong> charValue;
<a class="jxr_linenumber" name="199" href="#199">199</a> 
<a class="jxr_linenumber" name="200" href="#200">200</a>         <em class="jxr_comment">// high order 4 bits of first byte</em>
<a class="jxr_linenumber" name="201" href="#201">201</a>         <strong class="jxr_keyword">if</strong> (hexWordLength &gt; 3) {
<a class="jxr_linenumber" name="202" href="#202">202</a>             charValue = getIntValue(hexWord.charAt(hexWordIndex ++));
<a class="jxr_linenumber" name="203" href="#203">203</a>             ipByteArray[byteIndex] |= charValue &lt;&lt; 4;
<a class="jxr_linenumber" name="204" href="#204">204</a>         }
<a class="jxr_linenumber" name="205" href="#205">205</a> 
<a class="jxr_linenumber" name="206" href="#206">206</a>         <em class="jxr_comment">// low order 4 bits of the first byte</em>
<a class="jxr_linenumber" name="207" href="#207">207</a>         <strong class="jxr_keyword">if</strong> (hexWordLength &gt; 2) {
<a class="jxr_linenumber" name="208" href="#208">208</a>             charValue = getIntValue(hexWord.charAt(hexWordIndex ++));
<a class="jxr_linenumber" name="209" href="#209">209</a>             ipByteArray[byteIndex] |= charValue;
<a class="jxr_linenumber" name="210" href="#210">210</a>         }
<a class="jxr_linenumber" name="211" href="#211">211</a> 
<a class="jxr_linenumber" name="212" href="#212">212</a>         <em class="jxr_comment">// high order 4 bits of second byte</em>
<a class="jxr_linenumber" name="213" href="#213">213</a>         <strong class="jxr_keyword">if</strong> (hexWordLength &gt; 1) {
<a class="jxr_linenumber" name="214" href="#214">214</a>             charValue = getIntValue(hexWord.charAt(hexWordIndex ++));
<a class="jxr_linenumber" name="215" href="#215">215</a>             ipByteArray[byteIndex + 1] |= charValue &lt;&lt; 4;
<a class="jxr_linenumber" name="216" href="#216">216</a>         }
<a class="jxr_linenumber" name="217" href="#217">217</a> 
<a class="jxr_linenumber" name="218" href="#218">218</a>         <em class="jxr_comment">// low order 4 bits of the first byte</em>
<a class="jxr_linenumber" name="219" href="#219">219</a>         charValue = getIntValue(hexWord.charAt(hexWordIndex));
<a class="jxr_linenumber" name="220" href="#220">220</a>         ipByteArray[byteIndex + 1] |= charValue &amp; 15;
<a class="jxr_linenumber" name="221" href="#221">221</a>     }
<a class="jxr_linenumber" name="222" href="#222">222</a> 
<a class="jxr_linenumber" name="223" href="#223">223</a>     <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> getIntValue(<strong class="jxr_keyword">char</strong> c) {
<a class="jxr_linenumber" name="224" href="#224">224</a> 
<a class="jxr_linenumber" name="225" href="#225">225</a>         <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="226" href="#226">226</a>         <strong class="jxr_keyword">case</strong> '0':
<a class="jxr_linenumber" name="227" href="#227">227</a>             <strong class="jxr_keyword">return</strong> 0;
<a class="jxr_linenumber" name="228" href="#228">228</a>         <strong class="jxr_keyword">case</strong> '1':
<a class="jxr_linenumber" name="229" href="#229">229</a>             <strong class="jxr_keyword">return</strong> 1;
<a class="jxr_linenumber" name="230" href="#230">230</a>         <strong class="jxr_keyword">case</strong> '2':
<a class="jxr_linenumber" name="231" href="#231">231</a>             <strong class="jxr_keyword">return</strong> 2;
<a class="jxr_linenumber" name="232" href="#232">232</a>         <strong class="jxr_keyword">case</strong> '3':
<a class="jxr_linenumber" name="233" href="#233">233</a>             <strong class="jxr_keyword">return</strong> 3;
<a class="jxr_linenumber" name="234" href="#234">234</a>         <strong class="jxr_keyword">case</strong> '4':
<a class="jxr_linenumber" name="235" href="#235">235</a>             <strong class="jxr_keyword">return</strong> 4;
<a class="jxr_linenumber" name="236" href="#236">236</a>         <strong class="jxr_keyword">case</strong> '5':
<a class="jxr_linenumber" name="237" href="#237">237</a>             <strong class="jxr_keyword">return</strong> 5;
<a class="jxr_linenumber" name="238" href="#238">238</a>         <strong class="jxr_keyword">case</strong> '6':
<a class="jxr_linenumber" name="239" href="#239">239</a>             <strong class="jxr_keyword">return</strong> 6;
<a class="jxr_linenumber" name="240" href="#240">240</a>         <strong class="jxr_keyword">case</strong> '7':
<a class="jxr_linenumber" name="241" href="#241">241</a>             <strong class="jxr_keyword">return</strong> 7;
<a class="jxr_linenumber" name="242" href="#242">242</a>         <strong class="jxr_keyword">case</strong> '8':
<a class="jxr_linenumber" name="243" href="#243">243</a>             <strong class="jxr_keyword">return</strong> 8;
<a class="jxr_linenumber" name="244" href="#244">244</a>         <strong class="jxr_keyword">case</strong> '9':
<a class="jxr_linenumber" name="245" href="#245">245</a>             <strong class="jxr_keyword">return</strong> 9;
<a class="jxr_linenumber" name="246" href="#246">246</a>         }
<a class="jxr_linenumber" name="247" href="#247">247</a> 
<a class="jxr_linenumber" name="248" href="#248">248</a>         c = Character.toLowerCase(c);
<a class="jxr_linenumber" name="249" href="#249">249</a>         <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="250" href="#250">250</a>         <strong class="jxr_keyword">case</strong> 'a':
<a class="jxr_linenumber" name="251" href="#251">251</a>             <strong class="jxr_keyword">return</strong> 10;
<a class="jxr_linenumber" name="252" href="#252">252</a>         <strong class="jxr_keyword">case</strong> 'b':
<a class="jxr_linenumber" name="253" href="#253">253</a>             <strong class="jxr_keyword">return</strong> 11;
<a class="jxr_linenumber" name="254" href="#254">254</a>         <strong class="jxr_keyword">case</strong> 'c':
<a class="jxr_linenumber" name="255" href="#255">255</a>             <strong class="jxr_keyword">return</strong> 12;
<a class="jxr_linenumber" name="256" href="#256">256</a>         <strong class="jxr_keyword">case</strong> 'd':
<a class="jxr_linenumber" name="257" href="#257">257</a>             <strong class="jxr_keyword">return</strong> 13;
<a class="jxr_linenumber" name="258" href="#258">258</a>         <strong class="jxr_keyword">case</strong> 'e':
<a class="jxr_linenumber" name="259" href="#259">259</a>             <strong class="jxr_keyword">return</strong> 14;
<a class="jxr_linenumber" name="260" href="#260">260</a>         <strong class="jxr_keyword">case</strong> 'f':
<a class="jxr_linenumber" name="261" href="#261">261</a>             <strong class="jxr_keyword">return</strong> 15;
<a class="jxr_linenumber" name="262" href="#262">262</a>         }
<a class="jxr_linenumber" name="263" href="#263">263</a>         <strong class="jxr_keyword">return</strong> 0;
<a class="jxr_linenumber" name="264" href="#264">264</a>     }
<a class="jxr_linenumber" name="265" href="#265">265</a> 
<a class="jxr_linenumber" name="266" href="#266">266</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> isValidIpV6Address(String ipAddress) {
<a class="jxr_linenumber" name="267" href="#267">267</a>         <strong class="jxr_keyword">int</strong> length = ipAddress.length();
<a class="jxr_linenumber" name="268" href="#268">268</a>         <strong class="jxr_keyword">boolean</strong> doubleColon = false;
<a class="jxr_linenumber" name="269" href="#269">269</a>         <strong class="jxr_keyword">int</strong> numberOfColons = 0;
<a class="jxr_linenumber" name="270" href="#270">270</a>         <strong class="jxr_keyword">int</strong> numberOfPeriods = 0;
<a class="jxr_linenumber" name="271" href="#271">271</a>         StringBuilder word = <strong class="jxr_keyword">new</strong> StringBuilder();
<a class="jxr_linenumber" name="272" href="#272">272</a>         <strong class="jxr_keyword">char</strong> c = 0;
<a class="jxr_linenumber" name="273" href="#273">273</a>         <strong class="jxr_keyword">char</strong> prevChar;
<a class="jxr_linenumber" name="274" href="#274">274</a>         <strong class="jxr_keyword">int</strong> startOffset = 0; <em class="jxr_comment">// offset for [] ip addresses</em>
<a class="jxr_linenumber" name="275" href="#275">275</a>         <strong class="jxr_keyword">int</strong> endOffset = ipAddress.length();
<a class="jxr_linenumber" name="276" href="#276">276</a> 
<a class="jxr_linenumber" name="277" href="#277">277</a>         <strong class="jxr_keyword">if</strong> (endOffset &lt; 2) {
<a class="jxr_linenumber" name="278" href="#278">278</a>             <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="279" href="#279">279</a>         }
<a class="jxr_linenumber" name="280" href="#280">280</a> 
<a class="jxr_linenumber" name="281" href="#281">281</a>         <em class="jxr_comment">// Strip []</em>
<a class="jxr_linenumber" name="282" href="#282">282</a>         <strong class="jxr_keyword">if</strong> (ipAddress.charAt(0) == '[') {
<a class="jxr_linenumber" name="283" href="#283">283</a>             <strong class="jxr_keyword">if</strong> (ipAddress.charAt(endOffset - 1) != ']') {
<a class="jxr_linenumber" name="284" href="#284">284</a>                 <strong class="jxr_keyword">return</strong> false; <em class="jxr_comment">// must have a close ]</em>
<a class="jxr_linenumber" name="285" href="#285">285</a>             }
<a class="jxr_linenumber" name="286" href="#286">286</a> 
<a class="jxr_linenumber" name="287" href="#287">287</a>             startOffset = 1;
<a class="jxr_linenumber" name="288" href="#288">288</a>             endOffset --;
<a class="jxr_linenumber" name="289" href="#289">289</a>         }
<a class="jxr_linenumber" name="290" href="#290">290</a> 
<a class="jxr_linenumber" name="291" href="#291">291</a>         <em class="jxr_comment">// Strip the interface name/index after the percent sign.</em>
<a class="jxr_linenumber" name="292" href="#292">292</a>         <strong class="jxr_keyword">int</strong> percentIdx = ipAddress.indexOf('%', startOffset);
<a class="jxr_linenumber" name="293" href="#293">293</a>         <strong class="jxr_keyword">if</strong> (percentIdx &gt;= 0) {
<a class="jxr_linenumber" name="294" href="#294">294</a>             endOffset = percentIdx;
<a class="jxr_linenumber" name="295" href="#295">295</a>         }
<a class="jxr_linenumber" name="296" href="#296">296</a> 
<a class="jxr_linenumber" name="297" href="#297">297</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = startOffset; i &lt; endOffset; i ++) {
<a class="jxr_linenumber" name="298" href="#298">298</a>             prevChar = c;
<a class="jxr_linenumber" name="299" href="#299">299</a>             c = ipAddress.charAt(i);
<a class="jxr_linenumber" name="300" href="#300">300</a>             <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="301" href="#301">301</a>             <em class="jxr_comment">// case for the last 32-bits represented as IPv4 x:x:x:x:x:x:d.d.d.d</em>
<a class="jxr_linenumber" name="302" href="#302">302</a>             <strong class="jxr_keyword">case</strong> '.':
<a class="jxr_linenumber" name="303" href="#303">303</a>                 numberOfPeriods ++;
<a class="jxr_linenumber" name="304" href="#304">304</a>                 <strong class="jxr_keyword">if</strong> (numberOfPeriods &gt; 3) {
<a class="jxr_linenumber" name="305" href="#305">305</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="306" href="#306">306</a>                 }
<a class="jxr_linenumber" name="307" href="#307">307</a>                 <strong class="jxr_keyword">if</strong> (!isValidIp4Word(word.toString())) {
<a class="jxr_linenumber" name="308" href="#308">308</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="309" href="#309">309</a>                 }
<a class="jxr_linenumber" name="310" href="#310">310</a>                 <strong class="jxr_keyword">if</strong> (numberOfColons != 6 &amp;&amp; !doubleColon) {
<a class="jxr_linenumber" name="311" href="#311">311</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="312" href="#312">312</a>                 }
<a class="jxr_linenumber" name="313" href="#313">313</a>                 <em class="jxr_comment">// a special case ::1:2:3:4:5:d.d.d.d allows 7 colons with an</em>
<a class="jxr_linenumber" name="314" href="#314">314</a>                 <em class="jxr_comment">// IPv4 ending, otherwise 7 :'s is bad</em>
<a class="jxr_linenumber" name="315" href="#315">315</a>                 <strong class="jxr_keyword">if</strong> (numberOfColons == 7 &amp;&amp; ipAddress.charAt(startOffset) != ':' &amp;&amp;
<a class="jxr_linenumber" name="316" href="#316">316</a>                     ipAddress.charAt(1 + startOffset) != ':') {
<a class="jxr_linenumber" name="317" href="#317">317</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="318" href="#318">318</a>                 }
<a class="jxr_linenumber" name="319" href="#319">319</a>                 word.delete(0, word.length());
<a class="jxr_linenumber" name="320" href="#320">320</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="321" href="#321">321</a> 
<a class="jxr_linenumber" name="322" href="#322">322</a>             <strong class="jxr_keyword">case</strong> ':':
<a class="jxr_linenumber" name="323" href="#323">323</a>                 <em class="jxr_comment">// FIX "IP6 mechanism syntax #ip6-bad1"</em>
<a class="jxr_linenumber" name="324" href="#324">324</a>                 <em class="jxr_comment">// An IPV6 address cannot start with a single ":".</em>
<a class="jxr_linenumber" name="325" href="#325">325</a>                 <em class="jxr_comment">// Either it can starti with "::" or with a number.</em>
<a class="jxr_linenumber" name="326" href="#326">326</a>                 <strong class="jxr_keyword">if</strong> (i == startOffset &amp;&amp; (ipAddress.length() &lt;= i || ipAddress.charAt(i + 1) != ':')) {
<a class="jxr_linenumber" name="327" href="#327">327</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="328" href="#328">328</a>                 }
<a class="jxr_linenumber" name="329" href="#329">329</a>                 <em class="jxr_comment">// END FIX "IP6 mechanism syntax #ip6-bad1"</em>
<a class="jxr_linenumber" name="330" href="#330">330</a>                 numberOfColons ++;
<a class="jxr_linenumber" name="331" href="#331">331</a>                 <strong class="jxr_keyword">if</strong> (numberOfColons &gt; 7) {
<a class="jxr_linenumber" name="332" href="#332">332</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="333" href="#333">333</a>                 }
<a class="jxr_linenumber" name="334" href="#334">334</a>                 <strong class="jxr_keyword">if</strong> (numberOfPeriods &gt; 0) {
<a class="jxr_linenumber" name="335" href="#335">335</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="336" href="#336">336</a>                 }
<a class="jxr_linenumber" name="337" href="#337">337</a>                 <strong class="jxr_keyword">if</strong> (prevChar == ':') {
<a class="jxr_linenumber" name="338" href="#338">338</a>                     <strong class="jxr_keyword">if</strong> (doubleColon) {
<a class="jxr_linenumber" name="339" href="#339">339</a>                         <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="340" href="#340">340</a>                     }
<a class="jxr_linenumber" name="341" href="#341">341</a>                     doubleColon = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="342" href="#342">342</a>                 }
<a class="jxr_linenumber" name="343" href="#343">343</a>                 word.delete(0, word.length());
<a class="jxr_linenumber" name="344" href="#344">344</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="345" href="#345">345</a> 
<a class="jxr_linenumber" name="346" href="#346">346</a>             <strong class="jxr_keyword">default</strong>:
<a class="jxr_linenumber" name="347" href="#347">347</a>                 <strong class="jxr_keyword">if</strong> (word != <strong class="jxr_keyword">null</strong> &amp;&amp; word.length() &gt; 3) {
<a class="jxr_linenumber" name="348" href="#348">348</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="349" href="#349">349</a>                 }
<a class="jxr_linenumber" name="350" href="#350">350</a>                 <strong class="jxr_keyword">if</strong> (!isValidHexChar(c)) {
<a class="jxr_linenumber" name="351" href="#351">351</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="352" href="#352">352</a>                 }
<a class="jxr_linenumber" name="353" href="#353">353</a>                 word.append(c);
<a class="jxr_linenumber" name="354" href="#354">354</a>             }
<a class="jxr_linenumber" name="355" href="#355">355</a>         }
<a class="jxr_linenumber" name="356" href="#356">356</a> 
<a class="jxr_linenumber" name="357" href="#357">357</a>         <em class="jxr_comment">// Check if we have an IPv4 ending</em>
<a class="jxr_linenumber" name="358" href="#358">358</a>         <strong class="jxr_keyword">if</strong> (numberOfPeriods &gt; 0) {
<a class="jxr_linenumber" name="359" href="#359">359</a>             <em class="jxr_comment">// There is a test case with 7 colons and valid ipv4 this should resolve it</em>
<a class="jxr_linenumber" name="360" href="#360">360</a>             <strong class="jxr_keyword">if</strong> (numberOfPeriods != 3 || !(isValidIp4Word(word.toString()) &amp;&amp; numberOfColons &lt; 7)) {
<a class="jxr_linenumber" name="361" href="#361">361</a>                 <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="362" href="#362">362</a>             }
<a class="jxr_linenumber" name="363" href="#363">363</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="364" href="#364">364</a>             <em class="jxr_comment">// If we're at then end and we haven't had 7 colons then there is a</em>
<a class="jxr_linenumber" name="365" href="#365">365</a>             <em class="jxr_comment">// problem unless we encountered a doubleColon</em>
<a class="jxr_linenumber" name="366" href="#366">366</a>             <strong class="jxr_keyword">if</strong> (numberOfColons != 7 &amp;&amp; !doubleColon) {
<a class="jxr_linenumber" name="367" href="#367">367</a>                 <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="368" href="#368">368</a>             }
<a class="jxr_linenumber" name="369" href="#369">369</a> 
<a class="jxr_linenumber" name="370" href="#370">370</a>             <em class="jxr_comment">// If we have an empty word at the end, it means we ended in either</em>
<a class="jxr_linenumber" name="371" href="#371">371</a>             <em class="jxr_comment">// a : or a .</em>
<a class="jxr_linenumber" name="372" href="#372">372</a>             <em class="jxr_comment">// If we did not end in :: then this is invalid</em>
<a class="jxr_linenumber" name="373" href="#373">373</a>             <strong class="jxr_keyword">if</strong> (word.length() == 0 &amp;&amp; ipAddress.charAt(length - 1 - startOffset) == ':' &amp;&amp;
<a class="jxr_linenumber" name="374" href="#374">374</a>                 ipAddress.charAt(length - 2 - startOffset) != ':') {
<a class="jxr_linenumber" name="375" href="#375">375</a>                 <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="376" href="#376">376</a>             }
<a class="jxr_linenumber" name="377" href="#377">377</a>         }
<a class="jxr_linenumber" name="378" href="#378">378</a> 
<a class="jxr_linenumber" name="379" href="#379">379</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="380" href="#380">380</a>     }
<a class="jxr_linenumber" name="381" href="#381">381</a> 
<a class="jxr_linenumber" name="382" href="#382">382</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> isValidIp4Word(String word) {
<a class="jxr_linenumber" name="383" href="#383">383</a>         <strong class="jxr_keyword">char</strong> c;
<a class="jxr_linenumber" name="384" href="#384">384</a>         <strong class="jxr_keyword">if</strong> (word.length() &lt; 1 || word.length() &gt; 3) {
<a class="jxr_linenumber" name="385" href="#385">385</a>             <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="386" href="#386">386</a>         }
<a class="jxr_linenumber" name="387" href="#387">387</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; word.length(); i ++) {
<a class="jxr_linenumber" name="388" href="#388">388</a>             c = word.charAt(i);
<a class="jxr_linenumber" name="389" href="#389">389</a>             <strong class="jxr_keyword">if</strong> (!(c &gt;= '0' &amp;&amp; c &lt;= '9')) {
<a class="jxr_linenumber" name="390" href="#390">390</a>                 <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="391" href="#391">391</a>             }
<a class="jxr_linenumber" name="392" href="#392">392</a>         }
<a class="jxr_linenumber" name="393" href="#393">393</a>         <strong class="jxr_keyword">return</strong> Integer.parseInt(word) &lt;= 255;
<a class="jxr_linenumber" name="394" href="#394">394</a>     }
<a class="jxr_linenumber" name="395" href="#395">395</a> 
<a class="jxr_linenumber" name="396" href="#396">396</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> isValidHexChar(<strong class="jxr_keyword">char</strong> c) {
<a class="jxr_linenumber" name="397" href="#397">397</a>         <strong class="jxr_keyword">return</strong> c &gt;= '0' &amp;&amp; c &lt;= '9' || c &gt;= 'A' &amp;&amp; c &lt;= 'F' || c &gt;= 'a' &amp;&amp; c &lt;= 'f';
<a class="jxr_linenumber" name="398" href="#398">398</a>     }
<a class="jxr_linenumber" name="399" href="#399">399</a> 
<a class="jxr_linenumber" name="400" href="#400">400</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> isValidNumericChar(<strong class="jxr_keyword">char</strong> c) {
<a class="jxr_linenumber" name="401" href="#401">401</a>         <strong class="jxr_keyword">return</strong> c &gt;= '0' &amp;&amp; c &lt;= '9';
<a class="jxr_linenumber" name="402" href="#402">402</a>     }
<a class="jxr_linenumber" name="403" href="#403">403</a> 
<a class="jxr_linenumber" name="404" href="#404">404</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="405" href="#405">405</a> <em class="jxr_javadoccomment">     * Takes a string and parses it to see if it is a valid IPV4 address.</em>
<a class="jxr_linenumber" name="406" href="#406">406</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="407" href="#407">407</a> <em class="jxr_javadoccomment">     * @return true, if the string represents an IPV4 address in dotted</em>
<a class="jxr_linenumber" name="408" href="#408">408</a> <em class="jxr_javadoccomment">     *         notation, false otherwise</em>
<a class="jxr_linenumber" name="409" href="#409">409</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="410" href="#410">410</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> isValidIpV4Address(String value) {
<a class="jxr_linenumber" name="411" href="#411">411</a> 
<a class="jxr_linenumber" name="412" href="#412">412</a>         <strong class="jxr_keyword">int</strong> periods = 0;
<a class="jxr_linenumber" name="413" href="#413">413</a>         <strong class="jxr_keyword">int</strong> i;
<a class="jxr_linenumber" name="414" href="#414">414</a>         <strong class="jxr_keyword">int</strong> length = value.length();
<a class="jxr_linenumber" name="415" href="#415">415</a> 
<a class="jxr_linenumber" name="416" href="#416">416</a>         <strong class="jxr_keyword">if</strong> (length &gt; 15) {
<a class="jxr_linenumber" name="417" href="#417">417</a>             <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="418" href="#418">418</a>         }
<a class="jxr_linenumber" name="419" href="#419">419</a>         <strong class="jxr_keyword">char</strong> c;
<a class="jxr_linenumber" name="420" href="#420">420</a>         StringBuilder word = <strong class="jxr_keyword">new</strong> StringBuilder();
<a class="jxr_linenumber" name="421" href="#421">421</a>         <strong class="jxr_keyword">for</strong> (i = 0; i &lt; length; i ++) {
<a class="jxr_linenumber" name="422" href="#422">422</a>             c = value.charAt(i);
<a class="jxr_linenumber" name="423" href="#423">423</a>             <strong class="jxr_keyword">if</strong> (c == '.') {
<a class="jxr_linenumber" name="424" href="#424">424</a>                 periods ++;
<a class="jxr_linenumber" name="425" href="#425">425</a>                 <strong class="jxr_keyword">if</strong> (periods &gt; 3) {
<a class="jxr_linenumber" name="426" href="#426">426</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="427" href="#427">427</a>                 }
<a class="jxr_linenumber" name="428" href="#428">428</a>                 <strong class="jxr_keyword">if</strong> (word.length() == 0) {
<a class="jxr_linenumber" name="429" href="#429">429</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="430" href="#430">430</a>                 }
<a class="jxr_linenumber" name="431" href="#431">431</a>                 <strong class="jxr_keyword">if</strong> (Integer.parseInt(word.toString()) &gt; 255) {
<a class="jxr_linenumber" name="432" href="#432">432</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="433" href="#433">433</a>                 }
<a class="jxr_linenumber" name="434" href="#434">434</a>                 word.delete(0, word.length());
<a class="jxr_linenumber" name="435" href="#435">435</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (!Character.isDigit(c)) {
<a class="jxr_linenumber" name="436" href="#436">436</a>                 <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="437" href="#437">437</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="438" href="#438">438</a>                 <strong class="jxr_keyword">if</strong> (word.length() &gt; 2) {
<a class="jxr_linenumber" name="439" href="#439">439</a>                     <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="440" href="#440">440</a>                 }
<a class="jxr_linenumber" name="441" href="#441">441</a>                 word.append(c);
<a class="jxr_linenumber" name="442" href="#442">442</a>             }
<a class="jxr_linenumber" name="443" href="#443">443</a>         }
<a class="jxr_linenumber" name="444" href="#444">444</a> 
<a class="jxr_linenumber" name="445" href="#445">445</a>         <strong class="jxr_keyword">if</strong> (word.length() == 0 || Integer.parseInt(word.toString()) &gt; 255) {
<a class="jxr_linenumber" name="446" href="#446">446</a>             <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="447" href="#447">447</a>         }
<a class="jxr_linenumber" name="448" href="#448">448</a> 
<a class="jxr_linenumber" name="449" href="#449">449</a>         <strong class="jxr_keyword">return</strong> periods == 3;
<a class="jxr_linenumber" name="450" href="#450">450</a>     }
<a class="jxr_linenumber" name="451" href="#451">451</a> 
<a class="jxr_linenumber" name="452" href="#452">452</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="453" href="#453">453</a> <em class="jxr_javadoccomment">     * Returns the {@link Inet6Address} representation of a {@link CharSequence} IP address.</em>
<a class="jxr_linenumber" name="454" href="#454">454</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a class="jxr_linenumber" name="455" href="#455">455</a> <em class="jxr_javadoccomment">     * This method will treat all IPv4 type addresses as "IPv4 mapped" (see {@link #getByName(CharSequence, boolean)})</em>
<a class="jxr_linenumber" name="456" href="#456">456</a> <em class="jxr_javadoccomment">     * @param ip {@link CharSequence} IP address to be converted to a {@link Inet6Address}</em>
<a class="jxr_linenumber" name="457" href="#457">457</a> <em class="jxr_javadoccomment">     * @return {@link Inet6Address} representation of the {@code ip} or {@code null} if not a valid IP address.</em>
<a class="jxr_linenumber" name="458" href="#458">458</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="459" href="#459">459</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Inet6Address getByName(CharSequence ip) {
<a class="jxr_linenumber" name="460" href="#460">460</a>         <strong class="jxr_keyword">return</strong> getByName(ip, <strong class="jxr_keyword">true</strong>);
<a class="jxr_linenumber" name="461" href="#461">461</a>     }
<a class="jxr_linenumber" name="462" href="#462">462</a> 
<a class="jxr_linenumber" name="463" href="#463">463</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="464" href="#464">464</a> <em class="jxr_javadoccomment">     * Returns the {@link Inet6Address} representation of a {@link CharSequence} IP address.</em>
<a class="jxr_linenumber" name="465" href="#465">465</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a class="jxr_linenumber" name="466" href="#466">466</a> <em class="jxr_javadoccomment">     * The {@code ipv4Mapped} parameter specifies how IPv4 addresses should be treated.</em>
<a class="jxr_linenumber" name="467" href="#467">467</a> <em class="jxr_javadoccomment">     * "IPv4 mapped" format as</em>
<a class="jxr_linenumber" name="468" href="#468">468</a> <em class="jxr_javadoccomment">     * defined in &lt;a href="<a href="http://tools.ietf.org/html/rfc4291" target="alexandria_uri">http://tools.ietf.org/html/rfc4291</a>#section-2.5.5"&gt;rfc 4291 section 2&lt;/a&gt; is supported.</em>
<a class="jxr_linenumber" name="469" href="#469">469</a> <em class="jxr_javadoccomment">     * @param ip {@link CharSequence} IP address to be converted to a {@link Inet6Address}</em>
<a class="jxr_linenumber" name="470" href="#470">470</a> <em class="jxr_javadoccomment">     * @param ipv4Mapped</em>
<a class="jxr_linenumber" name="471" href="#471">471</a> <em class="jxr_javadoccomment">     * &lt;ul&gt;</em>
<a class="jxr_linenumber" name="472" href="#472">472</a> <em class="jxr_javadoccomment">     * &lt;li&gt;{@code true} To allow IPv4 mapped inputs to be translated into {@link Inet6Address}&lt;/li&gt;</em>
<a class="jxr_linenumber" name="473" href="#473">473</a> <em class="jxr_javadoccomment">     * &lt;li&gt;{@code false} Don't turn IPv4 addressed to mapped addresses&lt;/li&gt;</em>
<a class="jxr_linenumber" name="474" href="#474">474</a> <em class="jxr_javadoccomment">     * &lt;/ul&gt;</em>
<a class="jxr_linenumber" name="475" href="#475">475</a> <em class="jxr_javadoccomment">     * @return {@link Inet6Address} representation of the {@code ip} or {@code null} if not a valid IP address.</em>
<a class="jxr_linenumber" name="476" href="#476">476</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="477" href="#477">477</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Inet6Address getByName(CharSequence ip, <strong class="jxr_keyword">boolean</strong> ipv4Mapped) {
<a class="jxr_linenumber" name="478" href="#478">478</a>         <strong class="jxr_keyword">final</strong> byte[] bytes = <strong class="jxr_keyword">new</strong> byte[IPV6_BYTE_COUNT];
<a class="jxr_linenumber" name="479" href="#479">479</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> ipLength = ip.length();
<a class="jxr_linenumber" name="480" href="#480">480</a>         <strong class="jxr_keyword">int</strong> compressBegin = 0;
<a class="jxr_linenumber" name="481" href="#481">481</a>         <strong class="jxr_keyword">int</strong> compressLength = 0;
<a class="jxr_linenumber" name="482" href="#482">482</a>         <strong class="jxr_keyword">int</strong> currentIndex = 0;
<a class="jxr_linenumber" name="483" href="#483">483</a>         <strong class="jxr_keyword">int</strong> value = 0;
<a class="jxr_linenumber" name="484" href="#484">484</a>         <strong class="jxr_keyword">int</strong> begin = -1;
<a class="jxr_linenumber" name="485" href="#485">485</a>         <strong class="jxr_keyword">int</strong> i = 0;
<a class="jxr_linenumber" name="486" href="#486">486</a>         <strong class="jxr_keyword">int</strong> ipv6Seperators = 0;
<a class="jxr_linenumber" name="487" href="#487">487</a>         <strong class="jxr_keyword">int</strong> ipv4Seperators = 0;
<a class="jxr_linenumber" name="488" href="#488">488</a>         <strong class="jxr_keyword">int</strong> tmp;
<a class="jxr_linenumber" name="489" href="#489">489</a>         <strong class="jxr_keyword">boolean</strong> needsShift = false;
<a class="jxr_linenumber" name="490" href="#490">490</a>         <strong class="jxr_keyword">for</strong> (; i &lt; ipLength; ++i) {
<a class="jxr_linenumber" name="491" href="#491">491</a>             <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">char</strong> c = ip.charAt(i);
<a class="jxr_linenumber" name="492" href="#492">492</a>             <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="493" href="#493">493</a>             <strong class="jxr_keyword">case</strong> ':':
<a class="jxr_linenumber" name="494" href="#494">494</a>                 ++ipv6Seperators;
<a class="jxr_linenumber" name="495" href="#495">495</a>                 <strong class="jxr_keyword">if</strong> (i - begin &gt; IPV6_MAX_CHAR_BETWEEN_SEPARATOR ||
<a class="jxr_linenumber" name="496" href="#496">496</a>                     ipv4Seperators &gt; 0 || ipv6Seperators &gt; IPV6_MAX_SEPARATORS ||
<a class="jxr_linenumber" name="497" href="#497">497</a>                     currentIndex + 1 &gt;= bytes.length) {
<a class="jxr_linenumber" name="498" href="#498">498</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="499" href="#499">499</a>                 }
<a class="jxr_linenumber" name="500" href="#500">500</a>                 value &lt;&lt;= (IPV6_MAX_CHAR_BETWEEN_SEPARATOR - (i - begin)) &lt;&lt; 2;
<a class="jxr_linenumber" name="501" href="#501">501</a> 
<a class="jxr_linenumber" name="502" href="#502">502</a>                 <strong class="jxr_keyword">if</strong> (compressLength &gt; 0) {
<a class="jxr_linenumber" name="503" href="#503">503</a>                     compressLength -= 2;
<a class="jxr_linenumber" name="504" href="#504">504</a>                 }
<a class="jxr_linenumber" name="505" href="#505">505</a> 
<a class="jxr_linenumber" name="506" href="#506">506</a>                 <em class="jxr_comment">// The value integer holds at most 4 bytes from right (most significant) to left (least significant).</em>
<a class="jxr_linenumber" name="507" href="#507">507</a>                 <em class="jxr_comment">// The following bit shifting is used to extract and re-order the individual bytes to achieve a</em>
<a class="jxr_linenumber" name="508" href="#508">508</a>                 <em class="jxr_comment">// left (most significant) to right (least significant) ordering.</em>
<a class="jxr_linenumber" name="509" href="#509">509</a>                 bytes[currentIndex++] = (byte) (((value &amp; 0xf) &lt;&lt; 4) | ((value &gt;&gt; 4) &amp; 0xf));
<a class="jxr_linenumber" name="510" href="#510">510</a>                 bytes[currentIndex++] = (byte) ((((value &gt;&gt; 8) &amp; 0xf) &lt;&lt; 4) | ((value &gt;&gt; 12) &amp; 0xf));
<a class="jxr_linenumber" name="511" href="#511">511</a>                 tmp = i + 1;
<a class="jxr_linenumber" name="512" href="#512">512</a>                 <strong class="jxr_keyword">if</strong> (tmp &lt; ipLength &amp;&amp; ip.charAt(tmp) == ':') {
<a class="jxr_linenumber" name="513" href="#513">513</a>                     ++tmp;
<a class="jxr_linenumber" name="514" href="#514">514</a>                     <strong class="jxr_keyword">if</strong> (compressBegin != 0 || (tmp &lt; ipLength &amp;&amp; ip.charAt(tmp) == ':')) {
<a class="jxr_linenumber" name="515" href="#515">515</a>                         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="516" href="#516">516</a>                     }
<a class="jxr_linenumber" name="517" href="#517">517</a>                     ++ipv6Seperators;
<a class="jxr_linenumber" name="518" href="#518">518</a>                     needsShift = ipv6Seperators == 2 &amp;&amp; value == 0;
<a class="jxr_linenumber" name="519" href="#519">519</a>                     compressBegin = currentIndex;
<a class="jxr_linenumber" name="520" href="#520">520</a>                     compressLength = bytes.length - compressBegin - 2;
<a class="jxr_linenumber" name="521" href="#521">521</a>                     ++i;
<a class="jxr_linenumber" name="522" href="#522">522</a>                 }
<a class="jxr_linenumber" name="523" href="#523">523</a>                 value = 0;
<a class="jxr_linenumber" name="524" href="#524">524</a>                 begin = -1;
<a class="jxr_linenumber" name="525" href="#525">525</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="526" href="#526">526</a>             <strong class="jxr_keyword">case</strong> '.':
<a class="jxr_linenumber" name="527" href="#527">527</a>                 ++ipv4Seperators;
<a class="jxr_linenumber" name="528" href="#528">528</a>                 <strong class="jxr_keyword">if</strong> (i - begin &gt; IPV4_MAX_CHAR_BETWEEN_SEPARATOR
<a class="jxr_linenumber" name="529" href="#529">529</a>                     || ipv4Seperators &gt; IPV4_SEPARATORS
<a class="jxr_linenumber" name="530" href="#530">530</a>                     || (ipv6Seperators &gt; 0 &amp;&amp; (currentIndex + compressLength &lt; 12))
<a class="jxr_linenumber" name="531" href="#531">531</a>                     || i + 1 &gt;= ipLength
<a class="jxr_linenumber" name="532" href="#532">532</a>                     || currentIndex &gt;= bytes.length
<a class="jxr_linenumber" name="533" href="#533">533</a>                     || begin &lt; 0
<a class="jxr_linenumber" name="534" href="#534">534</a>                     || (begin == 0 &amp;&amp; (i == 3 &amp;&amp; (!isValidNumericChar(ip.charAt(2)) ||
<a class="jxr_linenumber" name="535" href="#535">535</a>                                                   !isValidNumericChar(ip.charAt(1)) ||
<a class="jxr_linenumber" name="536" href="#536">536</a>                                                   !isValidNumericChar(ip.charAt(0))) ||
<a class="jxr_linenumber" name="537" href="#537">537</a>                                        i == 2 &amp;&amp; (!isValidNumericChar(ip.charAt(1)) ||
<a class="jxr_linenumber" name="538" href="#538">538</a>                                                   !isValidNumericChar(ip.charAt(0))) ||
<a class="jxr_linenumber" name="539" href="#539">539</a>                                        i == 1 &amp;&amp; !isValidNumericChar(ip.charAt(0))))) {
<a class="jxr_linenumber" name="540" href="#540">540</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="541" href="#541">541</a>                 }
<a class="jxr_linenumber" name="542" href="#542">542</a>                 value &lt;&lt;= (IPV4_MAX_CHAR_BETWEEN_SEPARATOR - (i - begin)) &lt;&lt; 2;
<a class="jxr_linenumber" name="543" href="#543">543</a> 
<a class="jxr_linenumber" name="544" href="#544">544</a>                 <em class="jxr_comment">// The value integer holds at most 3 bytes from right (most significant) to left (least significant).</em>
<a class="jxr_linenumber" name="545" href="#545">545</a>                 <em class="jxr_comment">// The following bit shifting is to restructure the bytes to be left (most significant) to</em>
<a class="jxr_linenumber" name="546" href="#546">546</a>                 <em class="jxr_comment">// right (least significant) while also accounting for each IPv4 digit is base 10.</em>
<a class="jxr_linenumber" name="547" href="#547">547</a>                 begin = (value &amp; 0xf) * 100 + ((value &gt;&gt; 4) &amp; 0xf) * 10 + ((value &gt;&gt; 8) &amp; 0xf);
<a class="jxr_linenumber" name="548" href="#548">548</a>                 <strong class="jxr_keyword">if</strong> (begin &lt; 0 || begin &gt; 255) {
<a class="jxr_linenumber" name="549" href="#549">549</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="550" href="#550">550</a>                 }
<a class="jxr_linenumber" name="551" href="#551">551</a>                 bytes[currentIndex++] = (byte) begin;
<a class="jxr_linenumber" name="552" href="#552">552</a>                 value = 0;
<a class="jxr_linenumber" name="553" href="#553">553</a>                 begin = -1;
<a class="jxr_linenumber" name="554" href="#554">554</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="555" href="#555">555</a>             <strong class="jxr_keyword">default</strong>:
<a class="jxr_linenumber" name="556" href="#556">556</a>                 <strong class="jxr_keyword">if</strong> (!isValidHexChar(c) || (ipv4Seperators &gt; 0 &amp;&amp; !isValidNumericChar(c))) {
<a class="jxr_linenumber" name="557" href="#557">557</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="558" href="#558">558</a>                 }
<a class="jxr_linenumber" name="559" href="#559">559</a>                 <strong class="jxr_keyword">if</strong> (begin &lt; 0) {
<a class="jxr_linenumber" name="560" href="#560">560</a>                     begin = i;
<a class="jxr_linenumber" name="561" href="#561">561</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (i - begin &gt; IPV6_MAX_CHAR_BETWEEN_SEPARATOR) {
<a class="jxr_linenumber" name="562" href="#562">562</a>                     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="563" href="#563">563</a>                 }
<a class="jxr_linenumber" name="564" href="#564">564</a>                 <em class="jxr_comment">// The value is treated as a sort of array of numbers because we are dealing with</em>
<a class="jxr_linenumber" name="565" href="#565">565</a>                 <em class="jxr_comment">// at most 4 consecutive bytes we can use bit shifting to accomplish this.</em>
<a class="jxr_linenumber" name="566" href="#566">566</a>                 <em class="jxr_comment">// The most significant byte will be encountered first, and reside in the right most</em>
<a class="jxr_linenumber" name="567" href="#567">567</a>                 <em class="jxr_comment">// position of the following integer</em>
<a class="jxr_linenumber" name="568" href="#568">568</a>                 value += getIntValue(c) &lt;&lt; ((i - begin) &lt;&lt; 2);
<a class="jxr_linenumber" name="569" href="#569">569</a>                 <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="570" href="#570">570</a>             }
<a class="jxr_linenumber" name="571" href="#571">571</a>         }
<a class="jxr_linenumber" name="572" href="#572">572</a> 
<a class="jxr_linenumber" name="573" href="#573">573</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> isCompressed = compressBegin &gt; 0;
<a class="jxr_linenumber" name="574" href="#574">574</a>         <em class="jxr_comment">// Finish up last set of data that was accumulated in the loop (or before the loop)</em>
<a class="jxr_linenumber" name="575" href="#575">575</a>         <strong class="jxr_keyword">if</strong> (ipv4Seperators &gt; 0) {
<a class="jxr_linenumber" name="576" href="#576">576</a>             <strong class="jxr_keyword">if</strong> (begin &gt; 0 &amp;&amp; i - begin &gt; IPV4_MAX_CHAR_BETWEEN_SEPARATOR ||
<a class="jxr_linenumber" name="577" href="#577">577</a>                 ipv4Seperators != IPV4_SEPARATORS ||
<a class="jxr_linenumber" name="578" href="#578">578</a>                 currentIndex &gt;= bytes.length) {
<a class="jxr_linenumber" name="579" href="#579">579</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="580" href="#580">580</a>             }
<a class="jxr_linenumber" name="581" href="#581">581</a>             <strong class="jxr_keyword">if</strong> (ipv6Seperators == 0) {
<a class="jxr_linenumber" name="582" href="#582">582</a>                 compressLength = 12;
<a class="jxr_linenumber" name="583" href="#583">583</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (ipv6Seperators &gt;= IPV6_MIN_SEPARATORS &amp;&amp;
<a class="jxr_linenumber" name="584" href="#584">584</a>                        ip.charAt(ipLength - 1) != ':' &amp;&amp;
<a class="jxr_linenumber" name="585" href="#585">585</a>                        (!isCompressed &amp;&amp; (ipv6Seperators == 6 &amp;&amp; ip.charAt(0) != ':') ||
<a class="jxr_linenumber" name="586" href="#586">586</a>                         isCompressed &amp;&amp; (ipv6Seperators + 1 &lt; IPV6_MAX_SEPARATORS &amp;&amp;
<a class="jxr_linenumber" name="587" href="#587">587</a>                                          (ip.charAt(0) != ':' || compressBegin &lt;= 2)))) {
<a class="jxr_linenumber" name="588" href="#588">588</a>                 compressLength -= 2;
<a class="jxr_linenumber" name="589" href="#589">589</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="590" href="#590">590</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="591" href="#591">591</a>             }
<a class="jxr_linenumber" name="592" href="#592">592</a>             value &lt;&lt;= (IPV4_MAX_CHAR_BETWEEN_SEPARATOR - (i - begin)) &lt;&lt; 2;
<a class="jxr_linenumber" name="593" href="#593">593</a> 
<a class="jxr_linenumber" name="594" href="#594">594</a>             <em class="jxr_comment">// The value integer holds at most 3 bytes from right (most significant) to left (least significant).</em>
<a class="jxr_linenumber" name="595" href="#595">595</a>             <em class="jxr_comment">// The following bit shifting is to restructure the bytes to be left (most significant) to</em>
<a class="jxr_linenumber" name="596" href="#596">596</a>             <em class="jxr_comment">// right (least significant) while also accounting for each IPv4 digit is base 10.</em>
<a class="jxr_linenumber" name="597" href="#597">597</a>             begin = (value &amp; 0xf) * 100 + ((value &gt;&gt; 4) &amp; 0xf) * 10 + ((value &gt;&gt; 8) &amp; 0xf);
<a class="jxr_linenumber" name="598" href="#598">598</a>             <strong class="jxr_keyword">if</strong> (begin &lt; 0 || begin &gt; 255) {
<a class="jxr_linenumber" name="599" href="#599">599</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="600" href="#600">600</a>             }
<a class="jxr_linenumber" name="601" href="#601">601</a>             bytes[currentIndex++] = (byte) begin;
<a class="jxr_linenumber" name="602" href="#602">602</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="603" href="#603">603</a>             tmp = ipLength - 1;
<a class="jxr_linenumber" name="604" href="#604">604</a>             <strong class="jxr_keyword">if</strong> (begin &gt; 0 &amp;&amp; i - begin &gt; IPV6_MAX_CHAR_BETWEEN_SEPARATOR ||
<a class="jxr_linenumber" name="605" href="#605">605</a>                 ipv6Seperators &lt; IPV6_MIN_SEPARATORS ||
<a class="jxr_linenumber" name="606" href="#606">606</a>                 !isCompressed &amp;&amp; (ipv6Seperators + 1 != IPV6_MAX_SEPARATORS  ||
<a class="jxr_linenumber" name="607" href="#607">607</a>                                   ip.charAt(0) == ':' || ip.charAt(tmp) == ':') ||
<a class="jxr_linenumber" name="608" href="#608">608</a>                 isCompressed &amp;&amp; (ipv6Seperators &gt; IPV6_MAX_SEPARATORS ||
<a class="jxr_linenumber" name="609" href="#609">609</a>                                  (ipv6Seperators == IPV6_MAX_SEPARATORS &amp;&amp;
<a class="jxr_linenumber" name="610" href="#610">610</a>                                   (compressBegin &lt;= 2 &amp;&amp; ip.charAt(0) != ':' ||
<a class="jxr_linenumber" name="611" href="#611">611</a>                                    compressBegin &gt;= 14 &amp;&amp; ip.charAt(tmp) != ':'))) ||
<a class="jxr_linenumber" name="612" href="#612">612</a>                 currentIndex + 1 &gt;= bytes.length) {
<a class="jxr_linenumber" name="613" href="#613">613</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="614" href="#614">614</a>             }
<a class="jxr_linenumber" name="615" href="#615">615</a>             <strong class="jxr_keyword">if</strong> (begin &gt;= 0 &amp;&amp; i - begin &lt;= IPV6_MAX_CHAR_BETWEEN_SEPARATOR) {
<a class="jxr_linenumber" name="616" href="#616">616</a>                 value &lt;&lt;= (IPV6_MAX_CHAR_BETWEEN_SEPARATOR - (i - begin)) &lt;&lt; 2;
<a class="jxr_linenumber" name="617" href="#617">617</a>             }
<a class="jxr_linenumber" name="618" href="#618">618</a>             <em class="jxr_comment">// The value integer holds at most 4 bytes from right (most significant) to left (least significant).</em>
<a class="jxr_linenumber" name="619" href="#619">619</a>             <em class="jxr_comment">// The following bit shifting is used to extract and re-order the individual bytes to achieve a</em>
<a class="jxr_linenumber" name="620" href="#620">620</a>             <em class="jxr_comment">// left (most significant) to right (least significant) ordering.</em>
<a class="jxr_linenumber" name="621" href="#621">621</a>             bytes[currentIndex++] = (byte) (((value &amp; 0xf) &lt;&lt; 4) | ((value &gt;&gt; 4) &amp; 0xf));
<a class="jxr_linenumber" name="622" href="#622">622</a>             bytes[currentIndex++] = (byte) ((((value &gt;&gt; 8) &amp; 0xf) &lt;&lt; 4) | ((value &gt;&gt; 12) &amp; 0xf));
<a class="jxr_linenumber" name="623" href="#623">623</a>         }
<a class="jxr_linenumber" name="624" href="#624">624</a> 
<a class="jxr_linenumber" name="625" href="#625">625</a>         i = currentIndex + compressLength;
<a class="jxr_linenumber" name="626" href="#626">626</a>         <strong class="jxr_keyword">if</strong> (needsShift || i &gt;= bytes.length) {
<a class="jxr_linenumber" name="627" href="#627">627</a>             <em class="jxr_comment">// Right shift array</em>
<a class="jxr_linenumber" name="628" href="#628">628</a>             <strong class="jxr_keyword">if</strong> (i &gt;= bytes.length) {
<a class="jxr_linenumber" name="629" href="#629">629</a>                 ++compressBegin;
<a class="jxr_linenumber" name="630" href="#630">630</a>             }
<a class="jxr_linenumber" name="631" href="#631">631</a>             <strong class="jxr_keyword">for</strong> (i = currentIndex; i &lt; bytes.length; ++i) {
<a class="jxr_linenumber" name="632" href="#632">632</a>                 <strong class="jxr_keyword">for</strong> (begin = bytes.length - 1; begin &gt;= compressBegin; --begin) {
<a class="jxr_linenumber" name="633" href="#633">633</a>                     bytes[begin] = bytes[begin - 1];
<a class="jxr_linenumber" name="634" href="#634">634</a>                 }
<a class="jxr_linenumber" name="635" href="#635">635</a>                 bytes[begin] = 0;
<a class="jxr_linenumber" name="636" href="#636">636</a>                 ++compressBegin;
<a class="jxr_linenumber" name="637" href="#637">637</a>             }
<a class="jxr_linenumber" name="638" href="#638">638</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="639" href="#639">639</a>             <em class="jxr_comment">// Selectively move elements</em>
<a class="jxr_linenumber" name="640" href="#640">640</a>             <strong class="jxr_keyword">for</strong> (i = 0; i &lt; compressLength; ++i) {
<a class="jxr_linenumber" name="641" href="#641">641</a>                 begin = i + compressBegin;
<a class="jxr_linenumber" name="642" href="#642">642</a>                 currentIndex = begin + compressLength;
<a class="jxr_linenumber" name="643" href="#643">643</a>                 <strong class="jxr_keyword">if</strong> (currentIndex &lt; bytes.length) {
<a class="jxr_linenumber" name="644" href="#644">644</a>                     bytes[currentIndex] = bytes[begin];
<a class="jxr_linenumber" name="645" href="#645">645</a>                     bytes[begin] = 0;
<a class="jxr_linenumber" name="646" href="#646">646</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="647" href="#647">647</a>                     <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="648" href="#648">648</a>                 }
<a class="jxr_linenumber" name="649" href="#649">649</a>             }
<a class="jxr_linenumber" name="650" href="#650">650</a>         }
<a class="jxr_linenumber" name="651" href="#651">651</a> 
<a class="jxr_linenumber" name="652" href="#652">652</a>         <strong class="jxr_keyword">if</strong> (ipv4Mapped &amp;&amp; ipv4Seperators &gt; 0 &amp;&amp;
<a class="jxr_linenumber" name="653" href="#653">653</a>             bytes[0] == 0 &amp;&amp; bytes[1] == 0 &amp;&amp; bytes[2] == 0 &amp;&amp; bytes[3] == 0 &amp;&amp; bytes[4] == 0 &amp;&amp;
<a class="jxr_linenumber" name="654" href="#654">654</a>             bytes[5] == 0 &amp;&amp; bytes[6] == 0 &amp;&amp; bytes[7] == 0 &amp;&amp; bytes[8] == 0 &amp;&amp; bytes[9] == 0) {
<a class="jxr_linenumber" name="655" href="#655">655</a>             bytes[10] = bytes[11] = (byte) 0xff;
<a class="jxr_linenumber" name="656" href="#656">656</a>         }
<a class="jxr_linenumber" name="657" href="#657">657</a> 
<a class="jxr_linenumber" name="658" href="#658">658</a>         <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="659" href="#659">659</a>             <strong class="jxr_keyword">return</strong> Inet6Address.getByAddress(<strong class="jxr_keyword">null</strong>, bytes, -1);
<a class="jxr_linenumber" name="660" href="#660">660</a>         } <strong class="jxr_keyword">catch</strong> (UnknownHostException e) {
<a class="jxr_linenumber" name="661" href="#661">661</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> RuntimeException(e); <em class="jxr_comment">// Should never happen</em>
<a class="jxr_linenumber" name="662" href="#662">662</a>         }
<a class="jxr_linenumber" name="663" href="#663">663</a>     }
<a class="jxr_linenumber" name="664" href="#664">664</a> 
<a class="jxr_linenumber" name="665" href="#665">665</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="666" href="#666">666</a> <em class="jxr_javadoccomment">     * Returns the {@link String} representation of an {@link InetAddress}.</em>
<a class="jxr_linenumber" name="667" href="#667">667</a> <em class="jxr_javadoccomment">     * &lt;ul&gt;</em>
<a class="jxr_linenumber" name="668" href="#668">668</a> <em class="jxr_javadoccomment">     * &lt;li&gt;Inet4Address results are identical to {@link InetAddress#getHostAddress()}&lt;/li&gt;</em>
<a class="jxr_linenumber" name="669" href="#669">669</a> <em class="jxr_javadoccomment">     * &lt;li&gt;Inet6Address results adhere to</em>
<a class="jxr_linenumber" name="670" href="#670">670</a> <em class="jxr_javadoccomment">     * &lt;a href="<a href="http://tools.ietf.org/html/rfc5952" target="alexandria_uri">http://tools.ietf.org/html/rfc5952</a>#section-4"&gt;rfc 5952 section 4&lt;/a&gt;&lt;/li&gt;</em>
<a class="jxr_linenumber" name="671" href="#671">671</a> <em class="jxr_javadoccomment">     * &lt;/ul&gt;</em>
<a class="jxr_linenumber" name="672" href="#672">672</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a class="jxr_linenumber" name="673" href="#673">673</a> <em class="jxr_javadoccomment">     * The output does not include Scope ID.</em>
<a class="jxr_linenumber" name="674" href="#674">674</a> <em class="jxr_javadoccomment">     * @param ip {@link InetAddress} to be converted to an address string</em>
<a class="jxr_linenumber" name="675" href="#675">675</a> <em class="jxr_javadoccomment">     * @return {@code String} containing the text-formatted IP address</em>
<a class="jxr_linenumber" name="676" href="#676">676</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="677" href="#677">677</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String toAddressString(InetAddress ip) {
<a class="jxr_linenumber" name="678" href="#678">678</a>         <strong class="jxr_keyword">return</strong> toAddressString(ip, false);
<a class="jxr_linenumber" name="679" href="#679">679</a>     }
<a class="jxr_linenumber" name="680" href="#680">680</a> 
<a class="jxr_linenumber" name="681" href="#681">681</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="682" href="#682">682</a> <em class="jxr_javadoccomment">     * Returns the {@link String} representation of an {@link InetAddress}.</em>
<a class="jxr_linenumber" name="683" href="#683">683</a> <em class="jxr_javadoccomment">     * &lt;ul&gt;</em>
<a class="jxr_linenumber" name="684" href="#684">684</a> <em class="jxr_javadoccomment">     * &lt;li&gt;Inet4Address results are identical to {@link InetAddress#getHostAddress()}&lt;/li&gt;</em>
<a class="jxr_linenumber" name="685" href="#685">685</a> <em class="jxr_javadoccomment">     * &lt;li&gt;Inet6Address results adhere to</em>
<a class="jxr_linenumber" name="686" href="#686">686</a> <em class="jxr_javadoccomment">     * &lt;a href="<a href="http://tools.ietf.org/html/rfc5952" target="alexandria_uri">http://tools.ietf.org/html/rfc5952</a>#section-4"&gt;rfc 5952 section 4&lt;/a&gt; if</em>
<a class="jxr_linenumber" name="687" href="#687">687</a> <em class="jxr_javadoccomment">     * {@code ipv4Mapped} is false.  If {@code ipv4Mapped} is true then "IPv4 mapped" format</em>
<a class="jxr_linenumber" name="688" href="#688">688</a> <em class="jxr_javadoccomment">     * from &lt;a href="<a href="http://tools.ietf.org/html/rfc4291" target="alexandria_uri">http://tools.ietf.org/html/rfc4291</a>#section-2.5.5"&gt;rfc 4291 section 2&lt;/a&gt; will be supported.</em>
<a class="jxr_linenumber" name="689" href="#689">689</a> <em class="jxr_javadoccomment">     * The compressed result will always obey the compression rules defined in</em>
<a class="jxr_linenumber" name="690" href="#690">690</a> <em class="jxr_javadoccomment">     * &lt;a href="<a href="http://tools.ietf.org/html/rfc5952" target="alexandria_uri">http://tools.ietf.org/html/rfc5952</a>#section-4"&gt;rfc 5952 section 4&lt;/a&gt;&lt;/li&gt;</em>
<a class="jxr_linenumber" name="691" href="#691">691</a> <em class="jxr_javadoccomment">     * &lt;/ul&gt;</em>
<a class="jxr_linenumber" name="692" href="#692">692</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a class="jxr_linenumber" name="693" href="#693">693</a> <em class="jxr_javadoccomment">     * The output does not include Scope ID.</em>
<a class="jxr_linenumber" name="694" href="#694">694</a> <em class="jxr_javadoccomment">     * @param ip {@link InetAddress} to be converted to an address string</em>
<a class="jxr_linenumber" name="695" href="#695">695</a> <em class="jxr_javadoccomment">     * @param ipv4Mapped</em>
<a class="jxr_linenumber" name="696" href="#696">696</a> <em class="jxr_javadoccomment">     * &lt;ul&gt;</em>
<a class="jxr_linenumber" name="697" href="#697">697</a> <em class="jxr_javadoccomment">     * &lt;li&gt;{@code true} to stray from strict rfc 5952 and support the "IPv4 mapped" format</em>
<a class="jxr_linenumber" name="698" href="#698">698</a> <em class="jxr_javadoccomment">     * defined in &lt;a href="<a href="http://tools.ietf.org/html/rfc4291" target="alexandria_uri">http://tools.ietf.org/html/rfc4291</a>#section-2.5.5"&gt;rfc 4291 section 2&lt;/a&gt; while still</em>
<a class="jxr_linenumber" name="699" href="#699">699</a> <em class="jxr_javadoccomment">     * following the updated guidelines in</em>
<a class="jxr_linenumber" name="700" href="#700">700</a> <em class="jxr_javadoccomment">     * &lt;a href="<a href="http://tools.ietf.org/html/rfc5952" target="alexandria_uri">http://tools.ietf.org/html/rfc5952</a>#section-4"&gt;rfc 5952 section 4&lt;/a&gt;&lt;/li&gt;</em>
<a class="jxr_linenumber" name="701" href="#701">701</a> <em class="jxr_javadoccomment">     * &lt;li&gt;{@code false} to strictly follow rfc 5952&lt;/li&gt;</em>
<a class="jxr_linenumber" name="702" href="#702">702</a> <em class="jxr_javadoccomment">     * &lt;/ul&gt;</em>
<a class="jxr_linenumber" name="703" href="#703">703</a> <em class="jxr_javadoccomment">     * @return {@code String} containing the text-formatted IP address</em>
<a class="jxr_linenumber" name="704" href="#704">704</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="705" href="#705">705</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String toAddressString(InetAddress ip, <strong class="jxr_keyword">boolean</strong> ipv4Mapped) {
<a class="jxr_linenumber" name="706" href="#706">706</a>         <strong class="jxr_keyword">if</strong> (ip instanceof Inet4Address) {
<a class="jxr_linenumber" name="707" href="#707">707</a>             <strong class="jxr_keyword">return</strong> ip.getHostAddress();
<a class="jxr_linenumber" name="708" href="#708">708</a>         }
<a class="jxr_linenumber" name="709" href="#709">709</a>         <strong class="jxr_keyword">if</strong> (!(ip instanceof Inet6Address)) {
<a class="jxr_linenumber" name="710" href="#710">710</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Unhandled type: "</span> + ip.getClass());
<a class="jxr_linenumber" name="711" href="#711">711</a>         }
<a class="jxr_linenumber" name="712" href="#712">712</a> 
<a class="jxr_linenumber" name="713" href="#713">713</a>         <strong class="jxr_keyword">final</strong> byte[] bytes = ip.getAddress();
<a class="jxr_linenumber" name="714" href="#714">714</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong>[] words = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">int</strong>[IPV6_WORD_COUNT];
<a class="jxr_linenumber" name="715" href="#715">715</a>         <strong class="jxr_keyword">int</strong> i;
<a class="jxr_linenumber" name="716" href="#716">716</a>         <strong class="jxr_keyword">for</strong> (i = 0; i &lt; words.length; ++i) {
<a class="jxr_linenumber" name="717" href="#717">717</a>             words[i] = ((bytes[i &lt;&lt; 1] &amp; 0xff) &lt;&lt; 8) | (bytes[(i &lt;&lt; 1) + 1] &amp; 0xff);
<a class="jxr_linenumber" name="718" href="#718">718</a>         }
<a class="jxr_linenumber" name="719" href="#719">719</a> 
<a class="jxr_linenumber" name="720" href="#720">720</a>         <em class="jxr_comment">// Find longest run of 0s, tie goes to first found instance</em>
<a class="jxr_linenumber" name="721" href="#721">721</a>         <strong class="jxr_keyword">int</strong> currentStart = -1;
<a class="jxr_linenumber" name="722" href="#722">722</a>         <strong class="jxr_keyword">int</strong> currentLength = 0;
<a class="jxr_linenumber" name="723" href="#723">723</a>         <strong class="jxr_keyword">int</strong> shortestStart = -1;
<a class="jxr_linenumber" name="724" href="#724">724</a>         <strong class="jxr_keyword">int</strong> shortestLength = 0;
<a class="jxr_linenumber" name="725" href="#725">725</a>         <strong class="jxr_keyword">for</strong> (i = 0; i &lt; words.length; ++i) {
<a class="jxr_linenumber" name="726" href="#726">726</a>             <strong class="jxr_keyword">if</strong> (words[i] == 0) {
<a class="jxr_linenumber" name="727" href="#727">727</a>                 <strong class="jxr_keyword">if</strong> (currentStart &lt; 0) {
<a class="jxr_linenumber" name="728" href="#728">728</a>                     currentStart = i;
<a class="jxr_linenumber" name="729" href="#729">729</a>                 }
<a class="jxr_linenumber" name="730" href="#730">730</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (currentStart &gt;= 0) {
<a class="jxr_linenumber" name="731" href="#731">731</a>                 currentLength = i - currentStart;
<a class="jxr_linenumber" name="732" href="#732">732</a>                 <strong class="jxr_keyword">if</strong> (currentLength &gt; shortestLength) {
<a class="jxr_linenumber" name="733" href="#733">733</a>                     shortestStart = currentStart;
<a class="jxr_linenumber" name="734" href="#734">734</a>                     shortestLength = currentLength;
<a class="jxr_linenumber" name="735" href="#735">735</a>                 }
<a class="jxr_linenumber" name="736" href="#736">736</a>                 currentStart = -1;
<a class="jxr_linenumber" name="737" href="#737">737</a>             }
<a class="jxr_linenumber" name="738" href="#738">738</a>         }
<a class="jxr_linenumber" name="739" href="#739">739</a>         <em class="jxr_comment">// If the array ends on a streak of zeros, make sure we account for it</em>
<a class="jxr_linenumber" name="740" href="#740">740</a>         <strong class="jxr_keyword">if</strong> (currentStart &gt;= 0) {
<a class="jxr_linenumber" name="741" href="#741">741</a>             currentLength = i - currentStart;
<a class="jxr_linenumber" name="742" href="#742">742</a>             <strong class="jxr_keyword">if</strong> (currentLength &gt; shortestLength) {
<a class="jxr_linenumber" name="743" href="#743">743</a>                 shortestStart = currentStart;
<a class="jxr_linenumber" name="744" href="#744">744</a>                 shortestLength = currentLength;
<a class="jxr_linenumber" name="745" href="#745">745</a>             }
<a class="jxr_linenumber" name="746" href="#746">746</a>         }
<a class="jxr_linenumber" name="747" href="#747">747</a>         <em class="jxr_comment">// Ignore the longest streak if it is only 1 long</em>
<a class="jxr_linenumber" name="748" href="#748">748</a>         <strong class="jxr_keyword">if</strong> (shortestLength == 1) {
<a class="jxr_linenumber" name="749" href="#749">749</a>             shortestLength = 0;
<a class="jxr_linenumber" name="750" href="#750">750</a>             shortestStart = -1;
<a class="jxr_linenumber" name="751" href="#751">751</a>         }
<a class="jxr_linenumber" name="752" href="#752">752</a> 
<a class="jxr_linenumber" name="753" href="#753">753</a>         <em class="jxr_comment">// Translate to string taking into account longest consecutive 0s</em>
<a class="jxr_linenumber" name="754" href="#754">754</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> shortestEnd = shortestStart + shortestLength;
<a class="jxr_linenumber" name="755" href="#755">755</a>         <strong class="jxr_keyword">final</strong> StringBuilder b = <strong class="jxr_keyword">new</strong> StringBuilder(IPV6_MAX_CHAR_COUNT);
<a class="jxr_linenumber" name="756" href="#756">756</a>         <strong class="jxr_keyword">if</strong> (shortestEnd &lt; 0) { <em class="jxr_comment">// Optimization when there is no compressing needed</em>
<a class="jxr_linenumber" name="757" href="#757">757</a>             b.append(Integer.toHexString(words[0]));
<a class="jxr_linenumber" name="758" href="#758">758</a>             <strong class="jxr_keyword">for</strong> (i = 1; i &lt; words.length; ++i) {
<a class="jxr_linenumber" name="759" href="#759">759</a>                 b.append(':');
<a class="jxr_linenumber" name="760" href="#760">760</a>                 b.append(Integer.toHexString(words[i]));
<a class="jxr_linenumber" name="761" href="#761">761</a>             }
<a class="jxr_linenumber" name="762" href="#762">762</a>         } <strong class="jxr_keyword">else</strong> { <em class="jxr_comment">// General case that can handle compressing (and not compressing)</em>
<a class="jxr_linenumber" name="763" href="#763">763</a>             <em class="jxr_comment">// Loop unroll the first index (so we don't constantly check i==0 cases in loop)</em>
<a class="jxr_linenumber" name="764" href="#764">764</a>             <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> isIpv4Mapped;
<a class="jxr_linenumber" name="765" href="#765">765</a>             <strong class="jxr_keyword">if</strong> (inRangeEndExclusive(0, shortestStart, shortestEnd)) {
<a class="jxr_linenumber" name="766" href="#766">766</a>                 b.append(<span class="jxr_string">"::"</span>);
<a class="jxr_linenumber" name="767" href="#767">767</a>                 isIpv4Mapped = ipv4Mapped &amp;&amp; (shortestEnd == 5 &amp;&amp; words[5] == 0xffff);
<a class="jxr_linenumber" name="768" href="#768">768</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="769" href="#769">769</a>                 b.append(Integer.toHexString(words[0]));
<a class="jxr_linenumber" name="770" href="#770">770</a>                 isIpv4Mapped = false;
<a class="jxr_linenumber" name="771" href="#771">771</a>             }
<a class="jxr_linenumber" name="772" href="#772">772</a>             <strong class="jxr_keyword">for</strong> (i = 1; i &lt; words.length; ++i) {
<a class="jxr_linenumber" name="773" href="#773">773</a>                 <strong class="jxr_keyword">if</strong> (!inRangeEndExclusive(i, shortestStart, shortestEnd)) {
<a class="jxr_linenumber" name="774" href="#774">774</a>                     <strong class="jxr_keyword">if</strong> (!inRangeEndExclusive(i - 1, shortestStart, shortestEnd)) {
<a class="jxr_linenumber" name="775" href="#775">775</a>                         <em class="jxr_comment">// If the last index was not part of the shortened sequence</em>
<a class="jxr_linenumber" name="776" href="#776">776</a>                         <strong class="jxr_keyword">if</strong> (!isIpv4Mapped || i == 6) {
<a class="jxr_linenumber" name="777" href="#777">777</a>                             b.append(':');
<a class="jxr_linenumber" name="778" href="#778">778</a>                         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="779" href="#779">779</a>                             b.append('.');
<a class="jxr_linenumber" name="780" href="#780">780</a>                         }
<a class="jxr_linenumber" name="781" href="#781">781</a>                     }
<a class="jxr_linenumber" name="782" href="#782">782</a>                     <strong class="jxr_keyword">if</strong> (isIpv4Mapped &amp;&amp; i &gt; 5) {
<a class="jxr_linenumber" name="783" href="#783">783</a>                         b.append(words[i] &gt;&gt; 8);
<a class="jxr_linenumber" name="784" href="#784">784</a>                         b.append('.');
<a class="jxr_linenumber" name="785" href="#785">785</a>                         b.append(words[i] &amp; 0xff);
<a class="jxr_linenumber" name="786" href="#786">786</a>                     } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="787" href="#787">787</a>                         b.append(Integer.toHexString(words[i]));
<a class="jxr_linenumber" name="788" href="#788">788</a>                     }
<a class="jxr_linenumber" name="789" href="#789">789</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (!inRangeEndExclusive(i - 1, shortestStart, shortestEnd)) {
<a class="jxr_linenumber" name="790" href="#790">790</a>                     <em class="jxr_comment">// If we are in the shortened sequence and the last index was not</em>
<a class="jxr_linenumber" name="791" href="#791">791</a>                     b.append(<span class="jxr_string">"::"</span>);
<a class="jxr_linenumber" name="792" href="#792">792</a>                 }
<a class="jxr_linenumber" name="793" href="#793">793</a>             }
<a class="jxr_linenumber" name="794" href="#794">794</a>         }
<a class="jxr_linenumber" name="795" href="#795">795</a> 
<a class="jxr_linenumber" name="796" href="#796">796</a>         <strong class="jxr_keyword">return</strong> b.toString();
<a class="jxr_linenumber" name="797" href="#797">797</a>     }
<a class="jxr_linenumber" name="798" href="#798">798</a> 
<a class="jxr_linenumber" name="799" href="#799">799</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="800" href="#800">800</a> <em class="jxr_javadoccomment">     * Does a range check on {@code value} if is within {@code start} (inclusive) and {@code end} (exclusive).</em>
<a class="jxr_linenumber" name="801" href="#801">801</a> <em class="jxr_javadoccomment">     * @param value The value to checked if is within {@code start} (inclusive) and {@code end} (exclusive)</em>
<a class="jxr_linenumber" name="802" href="#802">802</a> <em class="jxr_javadoccomment">     * @param start The start of the range (inclusive)</em>
<a class="jxr_linenumber" name="803" href="#803">803</a> <em class="jxr_javadoccomment">     * @param end The end of the range (exclusive)</em>
<a class="jxr_linenumber" name="804" href="#804">804</a> <em class="jxr_javadoccomment">     * @return</em>
<a class="jxr_linenumber" name="805" href="#805">805</a> <em class="jxr_javadoccomment">     * &lt;ul&gt;</em>
<a class="jxr_linenumber" name="806" href="#806">806</a> <em class="jxr_javadoccomment">     * &lt;li&gt;{@code true} if {@code value} if is within {@code start} (inclusive) and {@code end} (exclusive)&lt;/li&gt;</em>
<a class="jxr_linenumber" name="807" href="#807">807</a> <em class="jxr_javadoccomment">     * &lt;li&gt;{@code false} otherwise&lt;/li&gt;</em>
<a class="jxr_linenumber" name="808" href="#808">808</a> <em class="jxr_javadoccomment">     * &lt;/ul&gt;</em>
<a class="jxr_linenumber" name="809" href="#809">809</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="810" href="#810">810</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> inRangeEndExclusive(<strong class="jxr_keyword">int</strong> value, <strong class="jxr_keyword">int</strong> start, <strong class="jxr_keyword">int</strong> end) {
<a class="jxr_linenumber" name="811" href="#811">811</a>         <strong class="jxr_keyword">return</strong> value &gt;= start &amp;&amp; value &lt; end;
<a class="jxr_linenumber" name="812" href="#812">812</a>     }
<a class="jxr_linenumber" name="813" href="#813">813</a> 
<a class="jxr_linenumber" name="814" href="#814">814</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="815" href="#815">815</a> <em class="jxr_javadoccomment">     * A constructor to stop this class being constructed.</em>
<a class="jxr_linenumber" name="816" href="#816">816</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="817" href="#817">817</a>     <strong class="jxr_keyword">private</strong> <a href="../../../../org/jboss/netty/util/NetUtil.html">NetUtil</a>() {
<a class="jxr_linenumber" name="818" href="#818">818</a>         <em class="jxr_comment">// Unused</em>
<a class="jxr_linenumber" name="819" href="#819">819</a>     }
<a class="jxr_linenumber" name="820" href="#820">820</a> }
</pre>
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